Table 2. Univariate association between AZT MDA and Plasmodium falciparum malaria prevalence, Tanzania, January 12–July 21, 2009*.

Time	No. negative	No. positive	OR (95% CI)
Baseline
AZT–	840	54	1.03 (0.68–1.55)
AZT+	801	53
Month 1
AZT–	742	37	0.34 (0.17–0.64)†
AZT+	837	14
Month 3
AZT–	653	17	0.83 (0.38–1.77)
AZT+	700	15
Month 4
AZT–	523	8	0.52 (0.13–1.81)
AZT+	632	5
Month 6
AZT–	589	4	0.95 (0.18–5.12)
AZT+	621	4

*AZT, azithromycin; MDA, mass drug administration; OR, odds ratio.
†p<0.001.